baber/WOPTO huggingface dataset:
Patent GB-1168600-A (GB)
Title: Microwave Ultrasonic Delay Line
IPC: H03H9/125
Filed: 1968-07-26
Abstract: 1,168,600. Electromechanical delay lines. SANDERS ASSOCIATES Inc. 26 July, 1968 [26 July, 1967], No. 35886/68. Heading H3U. An ultrasonic dispersive delay line for microwave frequencies comprises an elongate substrate body 1, e.g. of silicon, supporting an epitaxial layer 2 of a single unitary crystalline material, e.g. SiO 2 , the ends of the body also supporting, respectively, piezoelectric input and output transducers 32 in contact with the layer. In the drawings Fig. 5 shows a lateral cross-section and Fig. 9 shows a, longitudinal cross-section at one end of the delay line. To enable the layer 2, which is a few microns thick, to transmit the ultrasonic waves it is necessary that its major surfaces 7, 8 form interfaces with the surrounding medium which are highly reflective whereas the medium adjacent the minor surfaces 9, 10 is required to be highly absorbent. A vacuum or gas provides an ideal surrounding medium for the major surfaces but as shown, the major surface 8 is mechanically supported on three thin films 12 deposited in a cavity 14 in the body 1. The top film adjacent the strip 2 has a substantially higher acoustic characteristic impedance than the strip, the next film has a relatively low acoustic characteristic impedance and the bottom film has a relatively high acoustic characteristic impedance. Suitable materials for the films are top film W, middle film A1, bottom film Au. The minor surfaces 9, 10 abut the sides of the cavity 14. The body 1 is clad in absorbing material 15. The transducer 32, connected to a coaxial line 38, comprises a film 33 of piezoelectric semi-conductor material, e.g. CdS, positioned between gold films 34, 35, the acoustic energy being transmitted through the film 34 to the layer 2. In a modification (Fig. 11, not shown) output taps are provided at intervals along the delay line, each tap including a transducer formed by a film of piezoelectric semi-conductor material in contact with the layer 2. In further modifications (Figs. 12, 13, not shown), the layer 2 has helical and spiral forms.
Patent GB-1068056-A (GB)
Title: Esters of n-alkyl-n-phenoxyalkanoylcarbonic acids
IPC: C07D333/32
Filed: 1964-09-02
Abstract: The invention comprises compounds of formula RO-CO-N(R2)-COR1, in which R2 is C1- 7 alkyl, R may be substituted and is phenyl, naphthyl or an oxa-, thio- or aza- 5- or 6-membered heterocyclic radical and R1CO is the acyl residue of a phenoxyalkanoic acid. These compounds may be prepared by conventional acylation, alkylation or esterification procedures from appropriate starting materials. Exemplified compounds are those in which R2 is Me, R1 is PhOCH2 and R is 2-isopropoxyphenyl, 2-cyclohexylphenyl, 2-isopropylphenyl or 1-naphthyl.ALSO:Pesticidal compositions comprise a compound of formula RO-CO-N(R2)-COR1, in which R2 is C1-7 alkyl, R may be substituted and is phenyl, naphthyl or an oxa-, thia- or aza-5- or 6- membered heterocyclic radical and R1CO is the acyl residue of a phenoxyalkanoic acid.  The compositions may take the form of dusting powders, granular solids, dispersions, emulsions, smokes, aerosols and dispersible or emulsifiable concentrates.
Patent GB-1276894-A (GB)
Title: Process for the preparation of a light-sensitive silver halide photographic material
Inventor: MEYER RUDOLF
IPC: G03C1/95
Filed: 1969-07-18
Abstract: 1276894 Photographic light-sensitive silver halide materials AGFA-GEVAERT A G 18 July 1969 [19 July 1968 12 Aug 1968] 36249/69 Heading G2C A photographic light-sensitive silver halide emulsion is made by precipitating silver halide in the presence of a hydrophilic organic binder such as gelatine, solidification or flocculation of the emulsion and washing, and before chemical ripening, adding to the emulsion a colloidal silicic acid sol so that the finished emulsion comprises at least 50% by weight of silicic acid based on the total binder employed. On coating the emulsion and drying, the emulsion layer is stated to comprise a substantially continuous porous silicic acid structure as matrix containing in the pores or cells of the matrix the silver halide and organic binder.
Patent GB-1440363-A (GB)
Title: Combination process for the conversion of hydrocarbonaceous black oil
IPC: C10G65/10
Filed: 1973-07-31
Abstract: 1440363 Hydrocracking UOP Inc 31 July 1973 [1 Aug 1972] 36295/73 Heading C5E In a process for cracking a black oil, the charge (1) is first treated (at 2) with a selective solvent (3) to provide an asphaltic pitch (4) and a solvent-rich, deasphalted first liquid (5). At least part of this liquid is then treated with a selective solvent (8) to provide a resin concentrate (11) and a deresined second liquid (12); at least part (9) of the resin phase is cracked (at 10) in the presence of hydrogen and a catalyst; at least part of the second liquid (12) and at least part of the product (6) from the first cracking are cracked in the presence of hydrogen and a catalyst, and useful products are recovered from the second cracking (14) or from both first and second crackings. As shown, the product of the first cracking is mixed with the deasphalted oil between the deasphalting and deresining steps. The same solvent may be used in both extraction steps, with a higher temperature or a greater ratio solvent/oil in the second step; suitable solvents are light hydrocarbons, e.g. ethane, propane, butanes, pentanes, ethylene, propylene and butylenes or light naphthas. At least part of the product of the first cracking stop may alternatively be thermally cracked before it is mixed with the deresined oil and sent to the second catalytic hydrocracking step. The heptane to 350 F. fraction of the product of the second hydrocracking step may be reformed.
Patent GB-969824-A (GB)
Title: The manufacture of dry powders
IPC: A23K40/30
Filed: 1962-09-26
Abstract: 969,824. Gelatinous vitamin &c. powders. F. HOFFMANN-LA ROCHE & CO. A.G. Sept. 26, 1962 [Sept. 27, 1961], No. 36524/62. Heading A2B. The production of powders involves passing an aqueous colloid solution capable of gelling, at gelling temperature or above, as threads into a liquid in which the colloid is insoluble, cutting up these threads, dispersing the so formed globules in the liquid, gelling them by cooling, and then separating them from the liquid. The colloids are gelatine, pectin, agar, gum tragacanth and sodium alinate. The colloid may carry food colourings and flavourings, feed supplements, vitamins, e.g. vitamins A, D, E and K, carotenoid substances, vitamins B1 and C, and pantothenyl alcohol, plasticizers such as glucose, fructose, sucrose, invert sugar, sorbitol, mannitol and glycerol, antioxidants such as tocopherols, butylated hydroxyanisole, butylated hydroxytoluene, gallic acid esters and 2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline, emulsifiers such as lecithin and polyoxyethylene sorbitan monooleate, and diluents or solvents such as sesame, cottonseed, arachis and coconut oils. According to an example, employing the apparatus of the figures, a preparation of vitamin A palmitate, gelatine, sucrose and water is pumped through a pipe 21 into the lower portion 3 of a column 1, there heated to 50‹C., passed through a perforated disc 6 and through 0.25 in. diam. holes in a screen 5 on the disc 6; at the same time, paraffin oil at 5‹C. is pumped through a pipe 15 into the column 1, and, if desired, additional paraffin oil at -5‹C. is pumped into the column 1 at 18; the threads of gelatine preparation from the screen 5 become semiplastic in the cool oil and are cut into globules by a rotating wheel 7 having knife-like spokes; these globules and the oil are stirred in the column 1 by paddles 12 on a rotating shaft 10; the globules gel completely and are removed with the oil at 14, whereupon the globules are filtered from the oil and dried.
Patent GB-935766-A (GB)
Title: Apparatus for assisting a patient to develop a respiration cycle
IPC: A61B5/00
Filed: 1960-10-25
Abstract: 935,766. Developing respiration. E. GIORDANO. Oct. 25, 1960 [Oct. 27, 1959], No. 36635/60. Class 81 (2). Apparatus for developing in a patient a predetermined respiratory cycle comprises three or four sets of electric lamps mounted in a predetermined pattern and representing, respectively, an inhalation phase, an exhalation phase and one or two breath-holding phases, and a switch device actuated by an electric motor to energize each set of lamps in succession. The switch device comprises a commutator drum 5 which is rotated by an electric motor 6 and carries tracks consisting of conducting and insulating segments or projecting cams, each track being contacted by a brush 4a-4d connected with a lamp 3a-3d disposed behind a window 2a-2d in a board 1 which is vertically arranged. Current from a source 8 is supplied to the lamps through a time switch 9, 9a and the drum, each lamp lighting up when the appropriate brush contacts a conducting portion of the appropriate track. The lamps may be arranged on the board in lines defining a rectangle or a figure eight. The commutator tracks are so disposed that the lamps light up or are extinguished one by one or in groups in a clockwise direction on the board to indicate when the patient should inhale, exhale or hold his breath. A lamp 11 at the centre of the board may be connected with a contact 13 which periodically contacts a tooth on a wheel 14 which is rotatable with the drum shaft so that the lamp winks to induce sleep.
Patent GB-1175436-A (GB)
Title: Printing Apparatus having a Resiliently Mounted Font Wheel
IPC: B41J1/30
Filed: 1967-08-10
Abstract: 1,175,436. Selective printing machines. FRIDEN Inc. 10 Aug., 1967 [5 Dec., 1966], No. 36677/67. Heading B6F. Type wheels and type-wheel machines.-In a printing apparatus having a continuouslyrotating type-wheel 16 and a hammer 76 for selectively moving a character 68 on the wheel 16 towards a platen 22 for printing, the wheel is resiliently mounted so that it moves laterally in its plane when a character thereon is momentarily clamped by the hammer into printing engagement with a paper sheet on the platen; smearing of the impression is thus prevented. The resilient mounting may comprise a rubber member 60, Fig. 3, fixed between the hub of the wheel 16 and its driving shaft 64. Alternatively, a mounting block 53 for the shaft 64 may be made of elastically deformable rubber or the shaft 64 may be arranged to flex laterally. The type wheel 16 has radial spokes which are flexible in an axial direction and are relatively rigid in the tangential direction. The characters 58 on the spokes face towards the platen 22. A carriage 14 carries the wheel 16 and hammer 76 and is movable on bars 30, 32 lengthwise of the platen. Character selection; hammer impression.- On the shaft 64 of the type-wheel 16 is a decoding disc 66 forming part of a known magnetic or photo-electric system causing a signal to be applied to an electromagnet 78 to operate the spring-retracted hammer 76 when a selected type is at the printing position. Leter spacing and carriage return.-The carriage 14 is connected to the ends of a cable 44 trained around an idler pulley 46 and a driving capstan 48, the latter being connected to a source of mechanical power 50 which may be a known spring or electric motor-driven mechanism for letter-spacing the carriage and for returning the carriage. The lateral movement of the type-wheel 16 during printing as referred to above, tends to move the carriage 14 in letter spacing direction and thus aids the metal acceleration of the carriage during letter spacing.
Patent GB-367068-A (GB)
Abstract: 367,068. Miniature golf greens &c. ; plastic compositions. ARMSTRONG CORK CO., Lancaster, Pennsylvania, U.S.A. -(Assignees of Powers, H. L. and Hartman, S. H. ; Lancaster, Pennsylvania, U.S.A.) Dec. 1, 1930, No. 36168. Convention date, Aug. 7. [Class 20 (iv).] Playing greens, such as miniature golf courses, are surfaced with a granular or powdered material consisting of comminuted linoleum and fillers such as wood flour, sand, slate powder, powdered limestone, or kaolin. The material may be mixed with an oil, preferably non-drying. As an example, the material consists of ground linoleum scrap 200 Ibs., wood flour 50 lbs., sand or other filler 90 lbs., mineral pigment 5 lbs., paraffin or creosote oil 10 gallons.
Patent GB-896547-A (GB)
Title: Constant power dissipating transistor circuit
IPC: H03F3/45
Filed: 1960-10-26
Abstract: 896,547. Transistor comparator circuits. GISHOLT MACHINE CO. Oct. 26, 1960 [June 30, 1960], No. 36718/60. Class 40(6). [Also in Group XXXVI] The current through and voltage across a solid state amplifying device is maintained constant in the stand-by condition so that its temperature rise is constant. A voltage comparator comprising transistors 1 and 2 has a voltage to be measured applied from a source 5 to the base of transistor 1 so that the transistor is normally conducting and a reference voltage switchable to the base of a normally non-conducting transistor 6 from a sweep voltage generator 8. The emitters of the two transistors are supplied from a transistor 12 2 arranged as a constant current source so that in operation when switch 9 is operated an increasing voltage is applied to the base of transistor 2 and when this voltage exceeds that from 5 the current is diverted from transistor 1 to transistor 2 to produce an output at lead 16. In order to prevent variations of the power dissipated in transistor 1 in the stand-by condition and the resulting temperature difference between the transistors the collector to emitter voltage is maintained constant as well as the collector current. This is effected by an emitter follower transistor 29 which varies the potential at the lower electrode of a zener diode 27 with changes in the emitter potential of transistor 1 and thus with changes in the base input voltage while the upper electrode of the zener diode is connected to the base of a further emitter follower transistor 19 connected to the collector of transistor 1 so that the emitter collector voltage is maintained at a value substantially equal to the constant voltage of the zener diode.
Patent GB-1221033-A (GB)
Title: Tubular heat exchangers
IPC: F28D1/053
Filed: 1969-07-22
Abstract: 1,221,033. Tubular heat exchangers. RESPAR A.S. 22 July, 1969 [22 July, 1968], No. 36724/69. Heading F4S. A battery of finned heat exchange tube elements 15 over which passes a fan-assisted gas stream, is mounted in a frame 16 and is arranged so that the tubes can be readily removed, e.g. for servicing. The elements 15 shown have at each end a transverse fluid passage 20 formed in a head portion 19. The elements are assembled with the respective head portions in abutment and are clamped together in the frame using screws 27 and blanking-off plugs 23, 24. Sealing between adjacent head portions is by a spigot and socket joint 21, 25 and the passages 20 define headers to which the tube-side fluid is admitted and discharged by way of connections 13, 14. Water or oil may circulate through the tubes to heat or cool a gas such as air. The invention is intended for the cooling of scavenging air for a diesel engine.
Patent GB-914946-A (GB)
Title: Control system for variable speed electrical motor systems
Inventor: KING KENNETH GORDON
IPC: H02P23/08
Filed: 1960-10-27
Abstract: 914,946. Control of A.C. motors. WESTING- HOUSE BRAKE & SIGNAL CO. Ltd. Aug. 25, 1961 [Oct. 27, 1960], No. 36870/60. Class 38 (3). The frequency of the output of an inverter 2 supplying an induction motor I is controlled so as to maintain the motor slip frequency at the optimum amount for maximum torque. As shown, a switch 12 is operated to trigger the inverter at the required rate by a cam 11 driven by the output shaft of a differential gear 5. The speed of this shaft is equal, or is proportional, to the sum of the motor speed and that of a servomotor 9, whose speed is controlled (possibly by a closed loop system, not described) to be proportional to the desired slip. In an alternative arrangement the differential and switch is replaced by an alternator having a permanent magnet rotor driven by the induction motor, and a " stator " driven by the servomotor, so that the output represents the sum of the two speeds and is used to control the triggering of the inverter. It is stated that the triggering pulses may be generated alternatively by photo-electric, capacitive or magnetic pickup means.
Patent GB-1323774-A (GB)
Title: Photographic silver halide elements and dye diffusion transfer processes
IPC: G03C8/44
Filed: 1970-07-30
Abstract: 1323774 Photographic dye-diffusion transfer process POLAROID CORP 30 July 1970 [30 July 1969] Addition to 1234532 Heading G2C A photographic film unit which may be processed by passage through the nip of a pair of rollers comprises a photo-sensitive element  comprising a composite structure containing in sequence, the following layers secured in superposed fixed relationship, a first support, an alkaline solution permeable polymeric acid  layer, a photo-sensitive silver halide emulsion layer having associated therewith a compound providing, as a function of development of the associated silver halide emulsion, an imagewise distribution of a dye image-providing material which is soluble and diffusible in alkali at a first pH, an alkaline solution permeable polymeric layer dyeable by the dye image-providing material, a transparent second support, and first and second rupturable compartments separately retaining first and second aqueous alkaline processing compositions, the first composition containing dispersed therein an opacifying agent and the second composition containing dispersed therein a reflecting agent, fixedly positioned and extending transverse a leading edge of the photo-sensitive element to effect imidirectional discharge of the first and second compositions, in order, layerwise intermediate the emulsion layer and the dyeable polymeric layer next adjacent thereto, the first and second compositions, taken together, possessing the first pH and the opacifying and reflecting agents, taken together, being present in a quantity sufficient, upon distribution to mask the emulsion layer and to prevent exposure of the emulsion layer during processing in the presence of actinic  radiation incident on the second support, and in which the polymeric acid layer contains sufficient acidifying groups, to effect reduction from the first pH to a second pH at which the dye  image providing material is substantially non- diffusible. The film unit may have an alkaline solution permeable polymeric sheet extending between the dyeable polymeric layer and the silver halide emulsion layer adjacent thereto, the first rupturable compartment being mounted to effect  unidirectional discharge of the first composition between the polymeric sheet and the silver halide emulsion layer adjacent thereto and the second rupturable compartment being mounted to effect unidirectional discharge of the second composition between the polymeric sheet and the dyeable polymeric layer adjacent thereto. The first and second rupturable compartments may be compartments of a single rupturable container or may be separate containers. The reflecting agent may be titanium dioxide. The opacifying agent may be carbon black. At least one of the first and second compositions may contain a filmforming polymeric material, e.g. hydroxyethyl cellulose. The compound associated with the silver halide emulsion layer may be a dye-  developer. The difference between this invention and that of the parent case is the location  of the polymeric acid layer.
Patent GB-1465509-A (GB)
Title: Measuring instruments and magnetic assemblies
IPC: G01R1/10
Filed: 1974-08-22
Abstract: 1465509 Bearings SIEMENS AG 22 Aug 1974 [23 Aug 1973] 37025/74 Heading F2A A magnetic assembly for a measuring instrument such as a galvanometer comprises a movable part mounted in bearings 6, 7 for turning about a vertical axis and means for producing a magnetic field for turning the movable part in dependence upon a parameter to be measured, the movable part including a member 9 made of soft magnetic material fixed in such manner that part of said magnetic field coacts with it to produce a force on the movable part, which force acts to oppose the load on the lower bearing 7. The movable part comprises a moving coil 3 situated in an air gap between a core magnet 1 and an iron return cylinder 2. The cylinder 2 is expanded beyond the lower face of the magnet 1 so as to produce stray lines of force 10 with a vertical component which acts upon the member 9. The bearings 6, 7 are jewel bearings.
Patent GB-755099-A (GB)
Title: Improvements in or relating to cathode-ray tube circuits
IPC: H04N9/26
Filed: 1954-12-22
Abstract: 755,099. Colour television. CHROMATIC TELEVISION LABORATORIES, Inc. Dec. 22, 1954 [Dec. 22, 1953], No. 37119/54. Class 40 (3). In a colour' television receiver employing a cathode-ray tube 3 of the type comprising a striped fluorescent screen 27 and post-deflection colour-selection grids 35, 351, a switching oscillation at the colour repetition frequency is applied between the grids by means of a transformer 41, 43, the inductance of the secondary of which is selected to resonate with the capacity between the grid electrodes. The arrangement permits the large interelectrode current which becomes necessary at a switching frequency of 3-4 Mc/s. to be obtained from an oscillatory source of relatively low power. The transformer is constructed as a simple air transformer with coaxial coils and is mounted as close as possible to or directly on the cathode-ray tube in a magnetic shield 51. The particular receiver described operates with a transmission in which the colour information is conveyed by a sub-carrier, and the switching oscillation is obtained from the sub-carrier source in receiver 1 via an amplifier 53. The tube E.H.T. supply to the grids is brought to the centre-tap on winding 41. The fluorescent stripes on the screen are in the sequence red, green, blue, green, &c., with the grid electrode wires opposite the red and blue stripes, Fig. 2 (not shown), and the colour signals on the receiver output leads 9r-9b are gated. to the cathode-ray tube cathode 15 in the same sequence in synchronism with the colour switching as by gate stages 59r-59b. The subcarrier oscillation is applied in antiphase from buffer amplifier 57 to gates 59r and 59b, and is applied via phase adjuster 61 and frequency doubler 63 to the green gate 59g.
Patent GB-1184228-A (GB)
Title: Improvements in Houses and other Buildings
Inventor: CAMERON JOHN GRIFFITHS
IPC: F24F8/108
Filed: 1967-08-14
Abstract: 1,184,228. Air filter. J. G. CAMERON. 14 Aug., 1967 [12 Aug., 1966], No. 37195/67. Heading B1T [Also in Division F4] Filters removably mounted in building air inlets each comprise a mat of fibrous or opencelled material such as foam plastics or felted material or woven stainless steel or plastics filaments, and may be treated with paraffin oil. Water-washed screens, combined with or separate from the filters, cool the incoming air by evaporation.